Stuck on two:
5 D
Fat Greek ultimately involved with Euro fiasco - panic! (5, 3)
- R - A - - - T
12A
Ostentatiously wiggle your arse for our toy boy, as clued by Cyclops [Compiler] (5, 4, 5)
S - A - E - O - R B - - - Y
Many ideas but none that I can ''fit''
Help please!