I don't have a mission breakdown for Middle East, but here are Central America and Indonesia:
Central America
1 - Destroy 10 tanks
2 - Destroy 5 fuel tanks
3 - Destroy 14 vehicles (NB: you only have 12 rockets, so blow up 2 MiGs with your machine gun to finish up)
4 - Pick up 3 pilots (you'll need to land twice; both sites are close to one another)
5 - Destroy 5 ships (watch out for friendly/allied forces on land)
6 - Destroy 15 tricks
7 - Pick up 1 pilot
8 - Destroy 20 tanks (difficult mission; watch out for a group of friendly/allied forces)
9 - Destroy 2 ships (super-easy)
10 - Drop off 3 groups of 5 soldiers (animation plays out as a pickup; hardest mission in the campaign -- one dropoff is heavily guarded, but if you clear it the other two are mostly undefended)
11 - Destroy 25 vehicles (tricky because of the presence of allied forces; probably worth battling helicopters and frigates to rack up wins, and using long-range guided missiles when possible)
12 - Destroy 6 SAM sites (easy)
Indonesia
1 - Destroy 8 vehicles (easy)
2 - Destroy 15 vehicles (still easy)
3 - Pick up 18 soldiers in 3 spots (may be the most difficult mission in the game -- strong enemy resistance and low ammo, plus one landing zone isn't on the map; get to LZ #1 by rotating to 45° and flying into the R side of that island, eliminating the nearby enemy turrets; then turn to 320° for LZ #2, and take out the resistance on that island; then turn to 60° and make your way to the little island with LZ #3; occasionally, enemies will randomly stop shooting for no apparent reason)
4 - Destroy 20 vehicles (watch out for friendlies)
5 - Destroy 5 SAM sites (tricky, but if you turn around 180 degrees at the start, it's easier to find sites)
6 - Destroy 1 bunker (silly - just turn around 180° and it's right there - you don't even need to use your laser targeter, you can just use a rocket)
7 - Pick up 6 soldiers in 3 spots (difficult, but not as hard as #3; turn to 280° and fly forward to reach LZ #1, overcoming some enemy resistance; then turn 160° to reach the second LZ, followed by 100° to reach the defenseless LZ #3)
8 - Destroy 1 bunker (almost as easy as #6; turn around 180° and follow the shoreline to the bunker; friendlies are present but aren't in the way; bunker takes 2 hits?)
9 - Destroy 30 vehicles (difficult, but combat is straightforward)
10 - Destroy 2 ships (easy as long as you can find the ships - turn around 180° as always and it seems to help)
11 - Pick up 8 soldiers in 4 spots (not as hard as #3; go 10° -- don't blow up the two fuel tanks -- to find LZ #1 near a bunker, eliminating nearby sources of fire, then follow the runway and terrain to LZ #2, which is also by a bunker; then backtrack to the two fuel tanks and hang a right, following the line made by the tanks, to reach LZ #3, where landing is very flaky and you'll sometimes die for no reason; then turn to 60° and fly forward for LZ #4)
12 - Destroy 4 ships (should be easy, but finding the ships can be difficult, and I almost lost the game on this mission!)