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.

Russia's leader said he was "confident that the leadership qualities" of Trump are a "good guarantee" of future agreements between global superpowers.

U.S. President Donald Trump renewed a threat to impose sanctions on Russia on Friday if there is no progress toward a peaceful settlement in Ukraine in two weeks, showing frustration at Moscow a week after his meeting with Russian President Vladimir Putin in Alaska.

NATO aircraft scrambled from Romania following a large-scale Russian attack on across Ukraine overnight, including in the Odesa region near Danube River border with allied nation.

Russia needs more workers, primarily due to its war in Ukraine. But rather than welcoming foreign laborers — many of whom are from Central Asia — Russian officials are fomenting anti-migrant sentiment and increasing restrictions on them.

President Vladimir Putin said on Friday that there was "light at the end of the tunnel" in Russia-U.S. relations and that the two countries were discussing joint projects in the Arctic and Alaska.

The same group of Russian naval vessels was tracked sailing from the Sea of Japan toward the East China Sea via the Tsushima Strait between August 14 and 15, according to Japan's Defense Ministry. Details of its week-long mission in the East China Sea remain unknown.

As negotiations over the war carry on, President Vladimir V. Putin is pushing hard with tactics that have evolved over three and a half years.