U.S. officials justified the Soleimani strike claiming it was necessary to stop an "imminent attack", though later clarifying the legal justification of the action as being taken "in response to an escalating series of attacks...to protect United States personnel, to deter Iran from conducting or supporting further attacks...and to end Iran's strategic escalation of attacks..." Some critics of the strike questioned the legality of the attack with respect to international law, as well as the domestic laws of the U.S. Iran called the strike an act of "state terrorism". The Iraqi government said the attack undermined its national sovereignty and considered it a breach of its bilateral security agreements with the U.S. and an act of aggression against its officials. On 5 January 2020, the Iraqi parliament passed a non-binding resolution to expel all foreign troops from its territory while, on the same day, Iran took the fifth and last step of reducing commitments to the 2015 international nuclear deal.
Until the beginning of the first millennium CE, the ordinary dress of people in India was entirely unstitched. The arrival of the Kushans from Central Asia, circa 48 CE, popularised cut and sewn garments in the style of Central Asian favoured by the elite in northern India. However, it was not until Muslim rule was established, first with the Delhi sultanate and then the Mughal Empire, that the range of stitched clothes in India grew and their use became significantly more widespread. Among the various garments gradually establishing themselves in northern India during medieval and early-modern times and now commonly worn are: the shalwars and pyjamas both forms of trousers, as well as the tunics kurta and kameez. In southern India, however, the traditional draped garments were to see much longer continuous use.
More InfoIn 1839, the ability of some materials to create an electrical charge from light exposure was first observed by Alexandre-Edmond Becquerel. Though the premiere solar panels were too inefficient for even simple electric devices they were used as an instrument to measure light. The observation by Becquerel was not replicated again until 1873, when Willoughby Smith discovered that the charge could be caused by light hitting selenium. After this discovery, William Grylls Adams and Richard Evans Day published "The action of light on selenium" in 1876, describing the experiment they used to replicate Smith's results.
More InfoThe strike occurred during the 2019–20 Persian Gulf crisis, which began after the U.S. withdrew from the 2015 nuclear deal with Iran in 2018, reimposed sanctions, and accused Iranian elements of fomenting a campaign to harass U.S. forces in the region. On 27 December 2019, the K-1 Air Base in Iraq, which hosts Iraqi and U.S. personnel, was attacked, killing an American contractor. The U.S. responded by launching airstrikes across Iraq and Syria, killing 25 Kata'ib Hezbollah militiamen. Days later, Shia militiamen and their supporters retaliated by attacking the U.S. embassy in the Green Zone.
More InfoIn 1839, the ability of some materials to create an electrical charge from light exposure was first observed by Alexandre-Edmond Becquerel. Though the premiere solar panels were too inefficient for even simple electric devices they were used as an instrument to measure light. The observation by Becquerel was not replicated again until 1873, when Willoughby Smith discovered that the charge could be caused by light hitting selenium. After this discovery, William Grylls Adams and Richard Evans Day published "The action of light on selenium" in 1876, describing the experiment they used to replicate Smith's results.
More InfoAverage pricing information divides in three pricing categories: those buying small quantities (modules of all sizes in the kilowatt range annually), mid-range buyers (typically up to 10 MWp annually), and large quantity buyers (self-explanatory—and with access to the lowest prices). Over the long term there is clearly a systematic reduction in the price of cells and modules. For example, in 2012 it was estimated that the quantity cost per watt was about US$0.60, which was 250 times lower than the cost in 1970 of US$150. A 2015 study shows price/kWh dropping by 10% per year since 1980, and predicts that solar could contribute 20% of total electricity consumption by 2030, whereas the International Energy Agency predicts 16% by 2050.
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