WASHINGTON — Congressional Democratic leaders are aggressively strategizing a new offensive against the Bush administration's management of the Iraq war as more and more anti-war lawmakers publicly acknowledge successes ahead of a key White House progress report. Aware of the trouble Iraqi progress could mean for Democrats at home — House Whip James Clyburn recently said if the surge were successful, it would be "a real problem for us" — a revised set of talking points is being worked up by Democrats that declares the escalation of troops in Iraq has not been successful despite White House claims otherwise. That...