Pakistan, Sept. 6 -- NATO members should not tolerate deliberate hybrid actions against alliance countries, US Ambassador Matthew Whitaker said Saturday. He also said the United States would support members facing such incidents. Whitaker made the remarks during a business conference in Cernobbio, Italy. He urged NATO countries to remain prepared and vigilant against emerging security threats.

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Whitaker highlighted an attempted drone attack at Germany's Leipzig/Halle Airport last month. Berlin has blamed Russia for the incident. He said the incident raised greater concern than drones accidentally crossing into NATO airspace. Russian drones targeting Ukraine have previously strayed off course into near...