Live in Times Square, this is Good Morning America.

Good morning America, so great to have you with us on a Sunday.

We have a lot to cover this morning, including the new images out of Paris, the newly reopened Notre Dame Cathedral.

Yes, lots to talk about lots to see there.

But this morning we begin with that stunning news overnight.

The toppling of President Bashar al-Assad's regime in Syria, crowds gathering in Damascus to celebrate after opposition forces entered the capital.

Assad's private residence ransacked with furniture overturned, items strewn everywhere.

An opposition fighter spotted sitting inside this office at the presidential palace.

We've got team coverage of this major event in the Middle East, including the reaction right here in the U.S., beginning with ABC's James Longman.

James, good morning to you.

Yeah, good morning, Gio.

This is one of the most extraordinary moments in the history of the Middle East.

Bashar al-Assad inherited power from his father nearly 25 years ago.

He has clung on to that power through years of civil war, but now a new rebel movement

has managed to topple his regime in less than two weeks.

History made overnight as Syrian dictator Bashar al-Assad is overthrown in a lightning move by rebel fighters. They are this morning inside the presidential palace, walking its huge halls,

celebrating amid the abandoned luxury of the Assad regime.

As outside, jubilation spreads on the streets of the capital.

For a moment, few saw coming.

Rebels declaring victory from the state TV studios,

saying the city of Damascus has been liberated,

the tyrant Bashar al-Assad has been toppled.

...