By CARLOTTA GALL, STANISLAV KOZLIUK and CASSANDRA VINOGRAD Explosions rocked the Ukrainian capital, Kyiv, early Monday, the eve of a NATO summit, as Russia mounted its second major attack on the city in days. President Volodymyr Zelenskyy of Ukraine, who is expected to attend the NATO summit in Turkey, said in a social media post that 12 people had been killed in the attack and 64 others wounded, including two children. The war in Ukraine will be front and foremost at the NATO meeting Tuesday…
