A Russian military transport plane took off from an airfield outside Moscow early on Wednesday and headed for the United States with a load of medical equipment and masks to help Washington fight coronavirus, Russian state TV reported. President Vladimir Putin offered Russian help in a phone conversation with President Donald Trump on Monday, when the two leaders discussed how best to respond to the virus. The flight, which was organised by the Russian Defence Ministry, is likely to be unpopular with some critics of Trump who have urged him to keep his distance from Putin and who argue that Moscow uses such aid as a geopolitical and propaganda tool to advance its influence, something the Kremlin denies.