India, June 2 -- European stocks are seen opening broadly lower on Monday in the wake of rising geopolitical and trade tensions.

Ukraine launched a large-scale drone attack on Russia over the weekend, retaliating against Russian aggression seen last week but further undermining upcoming peace talks.

On the tariff front, U.S. President Donald Trump has announced that import tariffs on steel and aluminum will double to 50 percent starting June 4, in what he called a move to protect domestic industry.

China has accused the U.S. of violating their recent trade deal and vowed to take measures to defend its interests, dimming the prospect of an immediate leadership call that Trump wants to have to further bilateral talks.

In another developme...