PostGlobal is launching a series of daily video discussions with moderator and Washington Post columnist David Ignatius.

Check this space each day for David's three-minute thoughts on the day's most pressing foreign story, or this week's critical issue he thinks we can't afford to ignore.

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You're invited to leave your responses in the comments thread, below.

How fast to move on Iran? How patient should the U.S. be in entertaining the idea of talks with Tehran?

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You're invited to leave your responses in the comments thread, below.

Even Warren Buffett -- America's icon of smart, careful investing - couldn't resist risky derivatives. Who could?

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You're invited to leave your responses in the comments thread, below.

Of inverse laws, hedge funds, and the perplexing question of a strong dollar in a weak economy.

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It hit me today: there's no one in Obama's administration with core career experience as as businessperson. Is that a strength or a weakness? What's your view?

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You're invited to leave your responses in the comments thread, below.

Global protectionism made the Great Depression longer and more painful - and we're starting to see it rear its ugly head again now. What can we do to head this off?

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The chair of the National Intelligence Council, Chas Freeman, steps down. That's a huge loss for a country that needs someone like him to push the envelope on its dangerously narrow foreign policy debate.

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Listening to businesspeople at a meeting in Houston today, I was struck by how hard the crisis has hit here - and by one man's musings on whether al-Qaeda members are smiling at our economic woes.

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Meeting with diplomats in the last few days, I hear enthusiasm for Obama's policies but nervousness that they may be too naive or too fast -- from Iran, to Israel and the Palestinians, to Pakistan. Do you agree?

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It's time to get AIG and the zombie banks out of the political fray and into bankruptcy court, Ignatius argues in today's video. Please post your comments below.

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Iran's quick rejection of Obama's overtures is rooted in the Islamic Republic's history and the anxiety of its leaders, Ignatius argues in today's video. Don't expect a quick turnaround -- and please post your comments below.

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Anger over executive pay and bonuses could poison labor relations for years, Ignatius argues in today's video. Is he right? How else do you expect the recession to change the long term business landscape? Please post your comments below.

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President Obama's latest moves in Afghanistan suggest he's determined not to let the war there become his Vietnam, Ignatius argues in today's video. Will he succeed? Please post your comments below.

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Weekend fighting between Iraq's largely Shiite army and a Sunni militia group shows how fragile our Iraqi success really is, Ignatius argues in today's video. Please post your comments below.

Follow David's daily thoughts on his RSS feed.