Aliens steal Jerusalem

Do any of you remember tthe name of the book about US politics, where a group of aliens interfere and, among other things, steal Jerusalem until both sides can cooperate? There were lots of abductions, and the central character was a woman from a bad neighbourhood, and there were at least two species of aliens, one of whom were very artistic.

Any ideas? Google can't help...

TIA

Update: timeplease is right; it's the Fresco by Sheri S Tepper.