The threats, pressure and ultimatums have come and gone, but Russian President Vladimir Putin has maintained Moscow’s uncompromising demands in Ukraine, raising fears he could use a planned summit with U.

Since President Trump retook office, many Ukrainians have worried a peace accord would be struck without them.

The leaders of major European states have called on US President Donald Trump to hold talks with Russian ruler Vladimir Putin on ending the war in Ukraine only if there is a ceasefire and guarantees to protect "Ukraine's and Europe's vital security interests".