Kyiv (AFP) – Russian air strikes hit a residential block in Kharkiv and the main TV tower in the capital Kyiv, Ukraine said on Tuesday, as Moscow stepped up attacks despite sanctions and warnings of a humanitarian crisis. Eight people were reported killed in the strike in Kharkiv, Ukraine’s second biggest city, on day six of Russia’s invasion of its pro-Western neighbour. Kharkiv officials said 10 more people had been killed by Russian shelling on a local government building, and 10 more were found alive under the rubble. Ukrainian officials said the strike on the TV tower in Kyiv killed five …