Why Abu Mazen will say no? O-b-a-m-a

Khaled Abu Toameh writes that 'moderate' 'Palestinian' President Mahmoud Abbas Abu Mazen will say no to John Kerry's 'framework agreement' because he has no fear of US President Hussein Obama.

The Palestinians also do not take Obama seriously, especially in
light of his failure in dealing with the crises in the Arab world and
Ukraine.

Abbas believes that he can say no to Obama because