People like Thomas Jefferson, who drafted the Declaration of Independence and became the third president of the United States, had to rely on Xenophon's Cyropaedia as a reference for the life and leadership of the Persian king.

BBC: Cyrus Cylinder: How a Persian monarch inspired Jefferson

On Friday, the departments of Treasury and Commerce announced revisions to existing Cuban sanctions, in the third set of regulatory changes since the President announced in December that the United States would re-establish diplomatic relations with Cuba.

CNN: Pope meets with Fidel Castro in Cuba

Mr. Chairman, today for only the third time in our nation's history, this committee meets to consider articles of impeachment against the President of the United States.

CNN: Transcript: Opening statement of Rep. Nadler

Both leaders, the senior-most Republican in the land, third in line, okay, a powerful figure with great authority, sat in a room with the President of the United States and worked out a detailed compromise.

WHITEHOUSE: Press Briefing