NATO countries are having second thoughts about buying America's F-35 as the 'predictability of our allies' is doubted amid Trump's seismic shifts

(Credit: VCG via Getty Images)

• Canada and Portugal have expressed willingness to explore alternatives to the F-35 stealth fighter as President Donald Trump has sown doubt about the US commitment to the NATO alliance. That comes as Trump presses ahead with his trade war and continues to call for Canada to become the 51st US state.

America's F-35 stealth fighter is seen by some allies as a potential vulnerability rather than a cutting-edge weapon that can boost warfighting capabilities.