ABC News' Sunlen Miller reports:
After receiving his rounds of morning briefings, President Obama will "drop by" a meeting hosted by Vice President Joe Biden to discuss the new START treaty in the Roosevelt Room.
Attendees will include Secretary of State Hillary Clinton; chairman of the Senate Foreign Relations Committee, Sen. John Kerry, D-Mass.; Sen. Richard Lugar, R-Ind.; former secretaries of state Madeleine Albright, James Baker and Henry Kissinger; former secretaries of defense William Cohen and William Perry; former National Security Advisor Brent Scowcroft; Vice Chairman of the Joint Chiefs of Staff Gen. James Cartwright; and former Sen. Sam Nunn, D-Ga.
On Wednesday, White House press secretary Robert Gibbs said the administration is “absolutely” still pushing forward to get the new START treaty through before the end of the year.
“The president will continue to push this and believes the Senate should act on this before they go home,” Gibbs said. "I do continue to think that we’re going to get START done.”
Despite what Sen. Jon Kyl, R-Ariz., said earlier in the week, Gibbs said he believes the treaty will come up for a vote.
“And I think we will have enough votes to pass it,” Gibbs said.
Later, the president and the vice president will meet with congressional Democratic leadership in the Oval Office. President Obama was to have a broader bipartisan summit with the Republican and Democratic leadership, but the full meeting was rescheduled for Nov. 30.
"If it’s more convenient that they wait, we’re going to wait a little,” Gibbs said. “The test is not when the meeting is held. The test is going to be whether or not you are going to have two sides that are capable of working together to make progress.”
In the afternoon, the president and the vice president will meet privately with Secretary of the Treasury Tim Geithner in the Oval Office.
In the late evening, the president will travel to Lisbon, Portugal, to attend the NATO and EU summits until Sunday.