Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Britain moved a step closer to bombing ISIS targets in Syria today as Labour said it would consider backing any military response to the Tunisian beach shootings. Defence Secretary Michael Fallon told MPs that it is illogical for UK forces to carry out strikes in Iraq but not in Syria. The Labour party, which defeated a plan to bomb the Assad regime in Syria two years ago, has dropped its opposition to strikes against ISIS in the country. But senior Tory MPs was warned there is 'no military necessity' for Britain expanding its role which could create a 'legal grey area'.Defence Secretary to deliver Commons speech on response to massacreWill tell MPs it is 'illogical' to support UK airstrikes in Iraq but not in SyriaWarning there is 'no military necessity' and could create a 'legal grey area'Labour leaves the door open to idea two years after blocking Syria strikes 
 Question:'This is a time for a considered assessment of the best course of action we can take to defeat this deadly threat to the _, an objective that unites us all.'

UK