Prime Minister Donald Tusk of Poland has warned that the country must consider nuclear options in light of a 'profound change of American geopolitics' under President Trump. Tusk did not explicitly propose developing a nuclear arsenal, but stated that Poland should explore options for nuclear and 'modern unconventional weapons.' He also mentioned that Poland is in talks with France about extending the French nuclear umbrella to other European countries. Tusk's comments reflect concerns in Eastern Europe over Trump's views on NATO and Russia. Poland is a signatory to the Nuclear Nonproliferation Treaty, but there have been discussions about trying to join the nuclear club.