BRUSSELS — EU defense chief Andrius Kubilius is exploring a new initiative for countries to jointly fund military capabilities like air-to-air refueling now provided by the U.S., three European Parliament officials told POLITICO. Under the scheme, governments interested in joining could voluntarily devote a share of the higher defense budgets approved last year by NATO countries to jointly develop battlefield kit that helps sustain military operations, the people said, adding that the EU could