The EU already had its work cut out to agree to impose a 50 percent tariff on steel imports by a summer deadline. Now, an attempt by lawmakers to graft a ban on Russian steel onto the measure has made things a lot more complicated. With the four-year mark of Vladimir Putin’s war of aggression against Ukraine looming this month, European lawmakers have broadly backed amendments that would allow Brussels to shut out all Russian steel, choking off an important source of export revenue for the