One day after U.S. President George Bush's inaugural address, political analysts say his pledge to end tyranny can be interpreted as an interventionist position.

"The survival of liberty in our land increasingly depends on the success of liberty in other lands. The best hope for peace in our world is the expansion of freedom in all the world," Bush said after being sworn in as 43rd president of the United States on Thursday.

Regimes around the world, both allies and rivals such as Syria, North Korea, and Iran are "on notice that things may be different now," John Harwood of the Wall Street Journal told Canada AM.

"I don't think anybody was quite prepared for the breadth of this speech," he said.

In his inaugural address, Bush said he spoke anew to "peoples of the world" with his message:

"All who live in tyranny and hopelessness can know: the United States will not ignore your oppression, or excuse your oppressors. When you stand for your liberty, we will stand with you."

Harwood added that the president's pledge to consult other nations is likely just a gesture.

"This is a president who is plainly going to chart a course and try to lead and get others to follow him," he said.

Presidential historian Gil Troy told Canada AM that Bush's interventionist position was evident in his address.

"You have this guy who used to have that deer-in-headlights look, he looked like he was uncomfortable in public and he really has emerged," Troy said, "You see him as someone who has a vision."

Inaugural addresses are often remembered for their memorable lines or as forecasters of a president's political course.

Perhaps the most quoted line from any address is John Kennedy's in 1961, who said: "My fellow Americans, ask not what your country can do for you -- ask what you can do for your country."

But Bush's words could be used against him at the end of his term if he doesn't follow through on his promises to end terrorism or if he fails in Iraq, Troy said.

Speculations about Bush's objectives pushed others to look farther into the future.

"The day after election day people are always going to be speculating over who is going to be the next president, who is going to run," Troy said.

He added that certain political figures such as president's brother Jed Bush, who is also Florida's governor and the Clinton family, are automatically on the radar because of their family history.

"We might be headed for a battle of the family titans," he said.