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Good morning.

Here’s what you need to know:

Carnage in Syria

• President Trump’s plans to withdraw U.S. troops from Syria have been muddled after a suspected chemical attack by forces loyal to President Bashar al-Assad over the weekend.

In the latest atrocity in the country’s seven-year civil war, dozens died, apparently from suffocation, in a rebel-held suburb east of Damascus, the capital. The U.S. and the European Union condemned the strike, but Syria’s allies in Moscow and Tehran dismissed reports of a chemical attack as “bogus.”

• Syria and Russia accused Israel today of airstrikes on a Syrian military base. Mr. Trump had promised a “big price” to be paid for the suspected chemical attack and partly blamed President Vladimir Putin of Russia.

“You are the product on the internet”

• Starting today, Facebook is to notify up to 87 million people whose information, including location and liked pages, was swept up by the political data firm Cambridge Analytica.