Expressing sorrow over the devastating floods in Nepal, neighboring countries China, India, Pakistan, and Bangladesh have extended their support.
 

Pakistan has stated— Pakistan Embassy Kathmandu stands in solidarity with the people of Nepal during this difficult hour. We are deeply saddened by the loss of precious lives and the destruction caused by the devastating floods.“

Shehbaz Sharif @CMShehbaz stated- 
Deeply saddened by the loss of precious lives and widespread devastation caused by the floods and landslides in Nepal’s Rasuwa District and other affected areas.

My heartfelt sympathies are with the bereaved families and all those affected by this tragedy. Pakistan stands in solidarity with the Government and people of Nepal during this difficult time. We pray for the safety and well-being of all those in the affected areas.
Indian Prime Minister Narendra Modi called Prime Minister Balen Shah to convey that India stands with Nepal in this time of grief. 
Humanitarian aid will begin arriving in Nepal starting today. The World Bank has announced immediate assistance of 25 billion.

Comparison of Aid Announcements