Ahead of a ministerial meeting of the counter-ISIS coalition, a senior U.S. official noted that "we're entering a very critical phase in which we need to expand the diplomatic cooperation to assist the populations in Iraq and north-eastern Syria recover from ISIS' rule but also maintaining significant pressure on ISIS as it increasingly turns to insurgent tactics to destabilise both north-eastern Syria and Iraq". Another official further indicated that "our three top priorities [in Syria]... continue to be to secure an enduring defeat of ISIS, to see the exit of all Iranian-commanded forces from the entirety of Syria and to reach a political settlement of the conflicts under UN Security Council Resolution 2254". A third diplomat asserted that "we can't turn a blind eye towards the malign activities of Iran throughout the region", adding that "we expect Iran to fully respect the sovereignty of Iraq and other regional states, to cease their destabilising activities and to refrain from actions that enflame sectarian tensions".