​Russia’s top diplomat said Friday that no meeting is planned between President Vladimir Putin and Ukraine’s Volodymyr Zelenskyy, casting new doubt on President Donald Trump’s push for a summit to end the war.“Putin is ready to meet with Zelenskyy when the agenda is ready for a summit, and this agenda is not ready at all,” Foreign Minister Sergey Lavrov told NBC News’ “Meet the Press” moderator Kristen Welker in an exclusive interview