Assertion: nerve agent's use | /r/CapableOf | cross red line
Facets:
Source sentences:
text: Barack Obama had said the use of chemical weapons in Syria would be crossing a 'red line', and prompt US intervention
text: Barack Obama warned that the use of chemical weapons in Syria would be crossing a ‘red line’, and prompt US intervention.
text: President Obama has long said that the use of such a weapon by the Assad regime would cross a “red line.