That’s exactly what they are doing concerning our Men and Women in uniform dying over there.
The American people are not dumb to be livid with Republicans over the management of the war in Iraq. They demand victory and an end, and the Republicans have failed to deliver either. They will therefore use the Democrats to enforce the latter, if the incentive involved can't get the Republicans to arrange and deliver the former.
No, responsibility on security means appeasing Iran on nukes, it means determined pacifism, it means denial that there is any danger from terrorism, it means withdrawal everywhere and credibility nowhere, and vapid pipe dreams about restoring America's standing by being nicer to rabid packs of notorious goons.
And when I say "when it hits", I do not mean a bad news cycle they can blame on Bush.