Germany’s economy is expected to contract under a Russian gas embargo.

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Air travel is back. Can the industry keep up?Airlines are increasingly confident that they’ve reached a turning point in their financial recovery, with healthy profits in their future. But staffing shortages threaten to stifle the rebound and rein in ambitions. The threat is greatest for smaller carriers and third-party vendors, but, in an interconnected industry, no one is isolated from those challenges.“The whole infrastructure is not set up to snap back to these rapid growth rates,” Scott Kirby, the chief executive of United Airlines, said on a call with investor analysts and reporters on Thursday. Beyond the airlines’ own work forces, that infr …