U.S. President Donald Trump's war on drugs threatens to result in even more illegal narcotics flooding into Europe, according to a top German expert.

Axar.az, citing Bild, reports that the American administration has, in recent weeks, launched airstrikes against what it says are South American drug traffickers in the Caribbean and Pacific Ocean.

Streeck told Bild: "A tougher approach by the US government against drug cartels in Colombia and Venezuela will probably not automatically ease the situation in Europe or Germany – on the contrary: Experience shows that criminal networks react with alternative routes, new transit countries, and also new, usually even more potent 'substitutes'."