Americans feel as optimistic about the situation in Iraq as they did in 2003, according to a new CBS News poll.

Sixty-four percent of Americans believe that the U.S. mission to make Iraq more stable is going at least somewhat well, the poll found — the highest level of optimism since December 2003, just after Saddam Hussein was captured.

A year ago, only 43 percent of Americans said they thought efforts were going well in Iraq, and in June 2007, only 22 percent reported feeling that way.

Americans are much more pessimistic about the current state of affairs in Afghanistan, according to the poll.

More than half of the respondents, or 55 percent, still believe that the U.S. shouldn't have entered Iraq at all.

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