Security agencies are gearing up for President-elect Donald Trump’s inauguration, which is complicated by factors such as technology and anxiety over recent terrorist attacks.

Greek Prime Minister Kyriakos Mitsotakis nominated parliament speaker Constantine Tassoulas from his centre-right New Democracy party for the Greek presidency on Wednesday.

President-elect Trump's inauguration on Monday will feature some of the most stringent security measures ever taken for a national security event. Why it matters: Expect a convergence of inauguration-goers and demonstrators to spark increased traffic,