The U.S. foots 75 percent of NATO's bill, increasingly hard to do given the enormous costs of the Afghan and Iraq wars, the pivot to Asia, and the war in Syria.
Behind the current impasse over five tiny specks of land in the East China Sea is an influential right-wing movement in Japan.
Nuclear weapons have not been used in warfare since Hiroshima and Nagasaki - but such good fortune may not last forever.
We extend our deepest sympathy and solidarity to the people of Japan in the unfathomable tragedy that is still unfolding, and we think about the wider implications.
Recommended films: the thrilling Chinese "Aftershock," the emotionally powerful "ANPO: Art X War," "Client 9," and the latest by John Sayles.
The underlying cause, says a Japanese labor researcher, is the company's stress on "low cost" in pursuit of high profits, at the expense of its workers and consumer safety.