I don't think China will get involved both diplomatically and economically... We could see Egypt, US, Saudi Arabia, UAE, Romania, Qatar, Oman, Albania, Kuwait, Bahrain, Morocco, UK, Tunisia, Turkey, Azerbaijan, Canada, Jordan, Australia, Sudan, Poland, Malaysia and Indonesia put forces on the ground (An outsider who is 50/50 is Bangladesh they are opportunistic most of the times so they could deploy or not).. The Americans never wage a war alone they make sure to bring atleast 30-40 coalition and this time they will likely want the coalition to provide as much manpower as they do themselves.
The Americans typically lobby for a war years before it happens and rarely never come alone.. Their biggest cannon fodder of all times is the british and you can count them in but this time they will bring in great regional armies their work could be cut short for them but it depends whether they will succced in their charm offensive and convincing others