In his inaugural address, U.S. President Joe Biden declared that Americans “will be judged” for how they “resolve the cascading crises of our era.” He expressed confidence that the country would “rise to the occasion,” and pledged that the United States would lead “not merely by the example of our power but by the power of our example.”

The contrast with President Donald Trump’s divisive, isolationist rhetoric could not be sharper. But adopting a different tone is easier than reversing America’s relative decline. To do that, Biden will need to provide wise, forward-looking leadership. And that does not necessarily mean breaking with everything that Trump did.

America’s debilitating political polarization has undermined its international standing. Partisan considerations have hampered — even precluded — the pursuit of long-term foreign-policy objectives. U.S. policy toward a declining Russia, for example, has become hostage to U.S. domestic politics.