A spokesman for the Iranian government said the country's top security body would hold an extraordinary meeting shortly to discuss the "criminal act of attack". Iran's Supreme Leader Ali Khamenei warned that "retaliation is waiting". On 4 January, the U.S. Department of Homeland Security said there was "no specific, credible" threat to the U.S. mainland but warned about Iranian capabilities. Trump warned Tehran that any retaliation would result in the U.S. targeting 52 Iranian significant sites, including cultural sites. The 52 sites were reported to represent the 52 American hostages held during the Iran hostage crisis. Hossein Dehghan, the main military adviser of Iran, and Iranian Foreign Minister Javad Zarif asserted that attacks on Iranian cultural sites would be grave breaches of international law. U.S. secretary of state Mike Pompeo avoided a direct answer when asked about cultural targets, saying that Washington will do the things that are right and the things that are consistent with U.S. law. U.S. secretary of defense Mark Esper later asserted that cultural sites would not be targeted because "That's the laws of armed conflict."
The modern Middle East has seen a number of occasions in which the assassination of high-level government and military figures was attempted, or at least considered. Such instances include United States air raids targeting Libyan leader Muammar Gaddafi in 1986 and Iraqi leader Saddam Hussein in 1991, 1998, and 2003, in addition to successful missions to kill non-state terrorist leaders such as Osama bin Laden, Anwar al-Awlaki and Abu Bakr al-Baghdadi. Governments conducting assassinations of foreign leaders was largely frowned upon in prior centuries, but that norm has been weakening over time, especially since World War II. The effectiveness of anti-terrorist "leadership targeting" has become a subject of scholarly debate, especially with regard to whether such killings are actually beneficial to a country's foreign policy goals. In the wake of the strike against Soleimani, both the topic of further eroding norms and questions regarding effectiveness were raised. The costs and benefits of foreign policy assassinations are difficult to compute, and decisions to go ahead with such actions often reflect the vague, and not always realized, hope that any successor to the targeted person will be less capable against, or will embody policies more favorable toward, the country taking the action.
More InfoIn 1881, Charles Fritts created the first commercial solar panel, which was reported by Fritts as "continuous, constant and of considerable force not only by exposure to sunlight but also to dim, diffused daylight." However, these solar panels were very inefficient, especially compared to coal-fired power plants. In 1939, Russell Ohl created the solar cell design that is used in many modern solar panels. He patented his design in 1941. In 1954, this design was first used by Bell Labs to create the first commercially viable silicon solar cell. In 1957, Mohamed M. Atalla developed the process of silicon surface passivation by thermal oxidation at Bell Labs. The surface passivation process has since been critical to solar cell efficiency.
More InfoA spokesman for the Iranian government said the country's top security body would hold an extraordinary meeting shortly to discuss the "criminal act of attack". Iran's Supreme Leader Ali Khamenei warned that "retaliation is waiting". On 4 January, the U.S. Department of Homeland Security said there was "no specific, credible" threat to the U.S. mainland but warned about Iranian capabilities. Trump warned Tehran that any retaliation would result in the U.S. targeting 52 Iranian significant sites, including cultural sites. The 52 sites were reported to represent the 52 American hostages held during the Iran hostage crisis. Hossein Dehghan, the main military adviser of Iran, and Iranian Foreign Minister Javad Zarif asserted that attacks on Iranian cultural sites would be grave breaches of international law. U.S. secretary of state Mike Pompeo avoided a direct answer when asked about cultural targets, saying that Washington will do the things that are right and the things that are consistent with U.S. law. U.S. secretary of defense Mark Esper later asserted that cultural sites would not be targeted because "That's the laws of armed conflict."
More InfoThe modern Middle East has seen a number of occasions in which the assassination of high-level government and military figures was attempted, or at least considered. Such instances include United States air raids targeting Libyan leader Muammar Gaddafi in 1986 and Iraqi leader Saddam Hussein in 1991, 1998, and 2003, in addition to successful missions to kill non-state terrorist leaders such as Osama bin Laden, Anwar al-Awlaki and Abu Bakr al-Baghdadi. Governments conducting assassinations of foreign leaders was largely frowned upon in prior centuries, but that norm has been weakening over time, especially since World War II. The effectiveness of anti-terrorist "leadership targeting" has become a subject of scholarly debate, especially with regard to whether such killings are actually beneficial to a country's foreign policy goals. In the wake of the strike against Soleimani, both the topic of further eroding norms and questions regarding effectiveness were raised. The costs and benefits of foreign policy assassinations are difficult to compute, and decisions to go ahead with such actions often reflect the vague, and not always realized, hope that any successor to the targeted person will be less capable against, or will embody policies more favorable toward, the country taking the action.
More InfoAccording to an unnamed senior U.S. official, sometime after the bombing of Kata'ib Hezbollah in late December 2019, a security briefing was convened at President Trump's Mar-a-Lago estate where he and his advisors, including Secretary of State Mike Pompeo, Defense Secretary Mark Esper, and chairman of the joint chiefs of staff General Mark Milley discussed how to respond to Iran's alleged role in sponsoring anti-U.S. attacks in Iraq. Reportedly, the targeted killing of Iranian general Qasem Soleimani, whom U.S. officials regarded as a facilitator of attacks on U.S. personnel in Iraq, was listed as the "most extreme option" of many options on a briefing slide, reflecting an alleged practice among Pentagon officials whereby a very extreme option is presented to presidents so as to make other options appear more palatable. Trump chose the option to kill Soleimani. The president's order prompted the CIA and other U.S. intelligence agencies that have tracked Soleimani's whereabouts for years to locate him on a flight from Damascus to Baghdad, reportedly to hold meetings with Iraqi militiamen. The air strike would have been called off if Soleimani had been on his way to meet with Iraqi government officials aligned with the U.S.
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