downed russian cruise missiles that were fired this morning towards the lviv region, the western part of ukraine. also the mayor of kyiv, the capital city came under fire this morning, and there is no word so far on possible casualties. >> but the attacks on kyiv following the sinks of the warship, ukraine claims it sank the moskva and the u.s. agrees. and a senior official said two hit the warship. >> president volodymyr zelenskyy has issued a warning not just for his country, but zelenskyy says that the world should be prepared for the possibility that vladimir putin could use tactical nuclear weapons in this war from russia in ukraine. we'll have more on jake tapper's exclusive interview with president zelenskyy coming up ahead. new military aid including helicopters expected to arrive in ukraine within the coming hours from now. the aid includes more heavy-duty