In this June 17, 2013, file photo, President Barack Obama meets with Russian President Vladimir Putin in Enniskillen, Northern Ireland.
Evan Vucci/AP

WASHINGTON (AP) -- President Barack Obama and Russian President Vladimir Putin (POO'-tihn) are discussing how to have a safe and secure Olympics in Sochi. The White House says the U.S. is offering its full assistance.

Obama and Putin spoke by phone on Tuesday amid security concerns for next month's Olympics.

Russian officials are hunting down three potential suicide bombers, including one believed in be in Sochi. The State Department is telling those attending the games to remain attentive to personal security. U.S. lawmakers have also expressed serious concerns.

The White House says Obama and Putin also discussed Syria's civil war and preparations for the peace conference starting this week in Switzerland, plus efforts to destroy Syria's chemical weapons.

Cooperation on Iran and the interim nuclear deal taking effect this week were also discussed.

Copyright 2014 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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