A pox on both their houses. Here are two graphs from Martin Peretz'slatest latest in the New Republic:

Transnational terrorism is by now on everybody's tongue and maybe even everybody's mind. But it wasn't so long ago that the threat of terrorism was a preoccupation of the very few, Richard Clarke chief among them. The American foreign and security policy mainstream--the soft-power advocates, the Eurocentric multilateralists, the globalization enthusiasts, and Kofi Annan's dinner partners, the U.N.-firsters--considered him a dangerous crank, an obsessive deserving only ridicule. America's ever-alert, and often hysterical, civil libertarians were alarmed by his ideas for safeguarding the homeland. To make matters worse, he was a consistent ally of Israel in the governments of Bush père and Bill Clinton, both of which shared an identical formula for how to shepherd the peace process: Squeeze the Jewish state to assume additional risk and make yet more unreciprocated concessions. Clarke's job was, in fact, always in peril during the Clinton administration, and its structural sloppiness may be one reason he survived.
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This year's partisanship has obscured the obvious truth behind the current 9/11 Commission hearings: Before September 11, 2001, both the Clinton and Bush administrations were unable or unwilling to mobilize the country against the growing terrorism threat. Neither the first World Trade Center bombing (which the Justice Department treated as a simple case of law enforcement), the enormities at two of our African embassies in 1998, nor the 2000 attack on the USS Cole disturbed our stupor. There is a rabbinic commentary about the tale of the walls of Jericho collapsing after Joshua's soldiers marched around them seven times. The first time, the city's inhabitants were frightened. The second, they were mildly disturbed. By the seventh, they couldn't care less and didn't defend the walls at all.