The U.S. State Department currently lists more than 60 nations as members of the 'Global Coalition to Degrade and Defeat ISIL' - so far these are the major developments in commitments by coalition partners, including the date of the first strikes by each country involved in the air campaign and the most recently announced totals for military and humanitarian aid contributed by the various partners.
*Has yet to commit to send any military assistance. **Nature or specifics of the commitment unclear