Complex sentence: International reactions to the 2015 military intervention in Yemen were mixed, with most Arab League states and several Western governments backing the Saudi Arabia-led coalition, but other governments warning against an escalation in the violent situation in Yemen.
Split into simpler sentences: International reactions to the 2015 military intervention in Yemen were mixed. Most Arab League nations & several Western governments backing the Saudi Arabia-led coalition, but other governments warned against an escalation in the violent situation in Yemen.