@ hakim saab,

Thanks for your question. But the answer of your question is probably not. The Indian plate is subducting beneath the Tibetian plate along the whole Himalayan range with different subduction rates at different places. Stress is building up along the whole Himalayan front regardless of subduction rate. As a result of this stress buildup we are getting all these earthquakes. But if an earthquake occur in the border of Pakistan and Afghanistan it will not help to release the stress accumulated in Central Nepal. We had some earthquakes events in eastern Nepal and also towards west of Nepal in India. But there is no record of significant earthquake in the central part of the Nepal which is termed as the seismic gap of central Nepal by scientists. It is not necessary that only big earthquakes can release the accumulated energy due to plate tectonics. Infact several small scale earthquakes  occur every day which also release the accumulated energy. However, to balance the total movement of Indian plate these small scale earthquakes are not sufficient, it requires some big events. I couldn't find my earlier post in Sajha where I have posted one figure clearly showing the seismic gap and other things.

Sooner or later big earthquake is inevitable in Nepal. And we need to pay serious attention on planning how we can avoid the disasters that will occur as the aftermaths of that earthquake.  

http://sajha.com/sajha/html/OpenThread.cfm?forum=2&ThreadID=76036

http://sajha.com/sajha/html/OpenThread.cfm?forum=2&ThreadID=81154