U.S. and Russia agree to keep talking after meeting on Ukraine

The top U.S. and Russian diplomats made no major breakthrough at talks on Ukraine on Friday but agreed to keep talking to try to resolve a crisis that has stoked fears of a military conflict.

After the talks in Geneva, U.S. Secretary of State Antony Blinken warned of a "swift, severe" response if Russia invades Ukraine after massing troops near its border. Russian Foreign Minister Sergei Lavrov said Moscow was still waiting for a written response to its demands for security guarantees.

But both said they were open to further dialogue,...