Nepal security assessment
Updated Jan 2018
The world is a mess, Nepal is also, only currently more so. However, in summary: it is safe to trek and travel in Nepal, there may be strikes, delays and inconveniences—there may not—BUT you have never been a target. You are safe from orchestrated political violence, even Americans, so come have an adventure.
2015 May - Nepal suffered a series of terrible earthquakes but all areas are now back to normal.
The future
The country has been in a slow motion death spiral for close to two decades and one would have hoped with the new constitution in September 2015, that the country might finally be climbing out of the abyss. However it has fallen further as ultimately the real problem is the greedy, narrow-minded geriatrics at the top of the heap have yet to change their ways. Nepal will only truly make it to base camp once they are out of the way and there is a major change in the deeply, utterly corrupt political culture.
Currently the economy is kept alive by remittances from overseas (approximately 10% of the population is working overseas, literally millions of people) as industry is not developing here. Inflation is running at around 7-15%; the unemployment rate is horrifying, and the list of serious flaws goes on. Administratively everything is blocked by politicians, and the chance of reviving democratic local government at the district level, and at the very important VDC (Village Development Committee) level in the near term is zero.
The problem is and always has been "the fox guarding the hen coop" with the politicians writing the rules to govern themselves, and they cannot even under pain of death see beyond their own pocket, beyond short term political gain. The country has been waiting in vain so far for the leaders to introduce universal law and order. Unfortunately the current crops of politicians are actually incapable of truly solving the current problems. Even the unbiased International Crisis group says the political parties "are badly run and ideologically impoverished organisations with few policy goals, unclear agendas and chronic leadership crises".
Naturally there are are frustrations everywhere. There has been no progress on a Truth and Reconciliation Commission to start to heal the families of the disappeared (ie brutally tortured and murdered) people who still have no information despite both sides agreeing to release information within 60 days, several times many years ago, and the laundry list is endless.
Expect occasional disturbances and strikes but normally these don't have too much effect on trekking plans.
Trekking safety
Come trekking, essentially all major teahouse routes are safe even for solo trekkers.
Kathmandu
Kathmandu is also a city on the edge. The air pollution is disgustingly bad and dangerously unhealthy, #177 out of 178 capital cities, the rush hour traffic is to the point of virtual gridlock and the city can't even dispose of its rubbish satisfactorily. Despite these rather big issues, the historic old parts and the tourist ghetto of Thamel still have a chaotic charm.