Russian Prime Minister Dmitry Medvedev attended a summit with President Obama.
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VIDEO | Jason Rezaian has been detained for more than 480 days.
VIDEO | The Republican reaction to attacks gives into fear, Obama said.
“I have never felt more uncomfortable than I do today,” Jack Devine said.
"These events are producing a tremendous rise in nationalism," he said.
Rep. Keith Ellison's son was taking part in a protest outside a police station.
Trump, Carson and Rubio will appear on this week's shows.
"We’re paying them to come here," Rep. Mo Brooks said.
"We have shown that we can welcome refugees and ensure our security."
Belgium warned of "a serious and imminent threat" Saturday.