A smoke rises over remains of a building destroyed by a military strike, as Russia’s attack on Ukraine continues, in Lysychansk, Luhansk region, Ukraine June 17, 2022. REUTERS/Oleksandr Ratushniak Western nations on Monday pledged unwavering support for Ukraine in the war with Russia, including more sanctions on Moscow and much-needed air defence systems, as Russian forces closed in on the last big city still held by Ukrainian troops in eastern Luhansk province. Leaders of the Group of Seven major democracies, meeting at a summit at an alpine resort in Germany, said they would keep sanctions on Moscow for as long...