Netanyahu knew for quite some time who will attend the meeting and the possibility of asking Israel to sign the NPT. Whether he attends himself or his representative, this issue will probably come up regadless. The real reason he is not going is most likely because he was already snubbed by President Obama when the president declared that he will not be meeting with him. He is just trying to save face. Israel can not afford to lose its super friend, and this prime minister is not doing anything meaningful to repair a rift.
Northern California wildfire doubles in size, displaces thousands (Reuters)