When it came to the crunch at Camp David and Barak was willing to give the store away, Arafat didn't dare to agree to end of struggle and any compromises for fear of being killed. He didn't counteroffer, but instead started the 2nd intifada to take the pressure off himself. When Olmert was willing to give away the store to Abbas secretly just before the elections, Abbas didn't respond, and when the Americans made Bibi say he accepted a Palestinian state, Abbas got cold feet and upped the ante asking for a settlement freeze (why didn't he ask Olmert? because he might have gotten it and lost that pretext). Then he started trouble in Jerusalem to take the pressure off himself and make Israeli concessions harder. He knows it's a death sentence to concede what Arafat and Hamas didn't.
U.S. army tests ballistic missile interceptor off Hawaii (AP)
from the article: ANALYSIS / Bluffing or not, Abbas has shown he's no Arafat