Original sentence: He came to power in 1999 by effecting a military coup d'état and has suspended the constitution of Pakistan twice; since then, after announcing his intention to combat extremists, western countries including the United States and the United Kingdom have switched from sanctions to active support through military and monetary aid
Edited sentence: He came to power in 1999 by effecting a military coup d'état and has suspended the constitution of Pakistan twice; since then, he has been periodically actively supported (through military and monetary aid) by western countries including the United States and the United Kingdom