U.S. government representatives met with Russian officials to talk about the future of Ukraine and a possible resolution to the nearly three-year war between Ukraine and Russia. European leaders voiced their frustrations about being left out of the process.

European leaders meeting in Paris on Monday for emergency talks called for higher defense spending to ramp up the continent's defense capabilities but remained divided on the possible deployment of peacekeepers to Ukraine to back up any peace deal.

French President Emmanuel Macron has called leaders from key European Union nations and the United Kingdom for an emergency meeting Monday.