The European Union and U.S. President Donald Trump seem to have differing positions on dealing with Russia, climate change and global trade, European Council President Donald Tusk said after talks with Trump on Thursday.

Tusk said in a televised statement that the two leaders agreed on countering militant violence and on relations with Ukraine: "We discussed foreign policy, security, climate and trade relations," Tusk said in Brussels after he and EU chief executive Jean-Claude Juncker met Trump for an hour.

"My feeling is that we agreed on many areas, first and foremost on counter-terrorism."

"But some issues remain open like climate and trade and I am not 100 percent sure that we can say today -- 'we' means Mr President and myself -- that we have a common position, common opinion, about Russia, although when it comes to the conflict in Ukraine it seems that we were on the same lines."