The letter told Mr Erdogan not to be "a fool" by launching a military offensive in northern Syria.
The US congressman was heavily involved with the Trump impeachment inquiry.
The prime minister hails "excellent deal" with the EU, but a successful vote in Parliament is not yet certain.
Security guards drag out opposition lawmakers in a second day of parliamentary protest.
A photo of Democrat Nancy Pelosi at an explosive White House meeting on Syria is causing a stir.
Inmates in Kenya say playing the sport teaches them discipline and gives them hope.
Mining weakness and General Motors strike weigh on output
The state’s African-American votes will be crucial to the senator’s 2020 chances
FT's Miranda Green and Anne-Sylvaine Chassany discuss the new deal
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The consensus at Westminster at this moment is that Boris Johnson doesn’t have the numbers