In a sign they are heeding calls from the United States to spend more to defend Europe, NATO leaders agree to deals estimated to be worth at least $72 billion.

As doubts swirl over US President Donald Trump's commitment to protecting NATO, Europe needs to take more responsibility for its own defence. After decades of underinvestment by…

Leaders are expected to focus on whether Europe can turn higher defense spending into military power as Washington pushes allies to shoulder more of the burden.

Alliance members tout defense investments to try to head off Trump’s complaints.