The announcement was made by leaders of Britain, France, Germany, Poland and Ukraine after a meeting in Kyiv, and a phone call with President Trump.

Twangiza Mining, a gold miner operating in the rebel-controlled South Kivu Province in the eastern Democratic Republic of Congo, said it has been ordered to suspend operations by the rebel administration, according to a company-wide letter seen by Reuters.

The leaders of Germany, France, the United Kingdom and Poland have told Russian leader Vladimir Putin to agree to a 30-day ceasefire starting on Monday or face possible “massive” sanctions, according to French President Emmanuel Macron,