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It was a sobering tour d’horizon, as seen through a Russia-watcher’s eyes.

The memos add up to a tour d’horizon of the international challenges that awaited Mr. Obama and his team in January 2009 with U.S. troops still in combat in two wars and various other threats to American security looming.

Rubenstein provides a sobering tour d’horizon of gross violations of the principle of humanity that is supposed to provide a foundation for the rights of health-care workers.

He offered a highly subjective tour d’horizon, praising the presidents overtures to North Korea and efforts — so far unavailing — to bring peace to the Middle East.

He thrillingly describes the Battle of Waterloo, tracks the War of 1812 in North America and offers a global tour d’horizon of Britain’s colonies in Canada, India and Australia.