By Kirsten PowersNew York Post Columnist/FOX News Contributor

Pakistan's ex-ambassador to Britain, Akbar Ahmed, a leading authority on Islam, has some advice for President Obama on his speech to the Muslim world this week.

Because Obama's father was Muslim, Ahmed says he believes that the president "has an instinctive understanding of Muslim culture. He can . . . reach to the heart of the Muslim world like no other American president can."

What should Obama say?

Says Ahmed: "Obama has to get the message across that we are not your enemies. Tell them, 'America wants you to live in peace and dignity.' And stress a long-term commitment to the region."

To read Ms. Power's complete column, click here.