Week in pictures: From Syria's war to the Winter Olympics

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Facts

Gwendolyn Frantz, 17, of Kensington, Maryland, stands in front of the White House during a student protest against gun violence, in Washington,

AUS Marine drinks the blood of a cobra during a jungle survival exercise - as part of the 'Cobra Gold 2018' (CG18) joint military exercise - at a military base in Chonburi, Thailand. [Athit Perawongmetha/Reuters]

A US Marine drinks the blood of a cobra during a jungle survival exercise - as part of the 'Cobra Gold 2018' (CG18) joint military exercise - at a military base in Chonburi, Thailand.

Palestinianchildren wait for travel permits to cross into Egypt from the Gaza Strip through the Rafah border crossing after Egyptian authorities opened it for humanitarian cases. [Mohammed Salem/Reuters]