IS fighters seized portions of Iraq and Syria in 2014 and declared the establishment of a so-called Islamic caliphate there, at a time when Syria was already convulsed by civil war.
Job: 'Sniper': Accused Islamic State fighter on trial in US
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Nikolas Granger, the U.S. senior representative to northeastern Syria, said Washington “strongly opposes military action that further destabilizes the lives of communities and families in Syria and we want immediate de-escalation.”
U.S. official urges 'de-escalation' as Turkey strikes Syria
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