WASHINGTON (AP) -- Vice President Joe Biden says "in my heart," he could be a good president.

But Biden emphasizes, "I haven’t made a decision to run and I haven’t made a decision not to run."

Biden tells NBC’s "Today" show he needs to focus on his current job. Asked if his wife, Jill, wants him to run, he replied, "Jill and I will make that decision later down the road."

In the interview broadcast Wednesday morning, Biden also took issue with administration critics who say President Barack Obama suffered "a lost year" in terms of achieving, or even advancing, major policy goals such as an immigration overhaul or new gun control laws.

And Biden says he likes former Defense Secretary Robert Gates, even though Gates asserted in his new memoir that Biden had been wrong on practically every foreign policy and national security issue over the past 40 years.

Biden says, quote, "The fundamental problem here is that Bob Gates and I have disagreed on almost every major foreign policy issue since Vietnam."