the 2005 Kashmir earthquake, and the 2010 Ladakh flash floods. Overseas infrastructure development Some of these projects carry out some of the development initiatives of the Indian government in foreign territories like Tajikistan, Afghanistan, Myanmar, and Bhutan. These include the Delaram-Zaranj Highway in Afghanistan, completed and handed over to the Afghan government during 2008, and the restoration of the Farkhor and Ayni air bases in Tajikistan. Border infrastructure development In response to the ever-present security threat from Pakistan and increased incursions and rapid border infrastructure from China, India too is undertaking border infrastructure development. Border roads As per a July 2017 update to Lok Sabha from the Government of India, construction of 73 completed strategic roads along the Sino-India border was approved in 2005 with initial and currently revised deadlines of 2012-2013 and 2019-2020 respectively, including 43 by the Ministry of Defence and 27 by the Ministry of Home Affairs, of which only 21 roads by March 2017 and 30 roads by July 2017 have been completed and the remaining are under construction as progress was slowed down due to wildlife conservation and environmental approval, insurgency related security hurdles, delay in land acquisition by the states, inaccessible terrain, inclement weather, and other impediments. BRO is constructing 63 out of these 73 roads as it costs BRO to per km compared to to per km of road construction by the private companies. In two years alone, 2015–16 and 2016–17, prime minister Narendra Modi's government has allocated more than US$4.7 billion in contracts for the development of border roads, which also includes the US$256 million India–Myanmar–Thailand Trilateral Highway from Moreh in Manipur through Tamu, Myanmar to Mae Sot in Thailand. In July 2020, BRO was also tasked with building new roads to connect eastern Bhutan to westen Tawang area such as Lumla-Trashigang road through Sakteng Wildlife Sanctuary. Road bridges To provide multiple points of alternative connectivity to the forces, BRO is building 410 2-lane class-70 (heavy load bearing including tanks) road bridges along the long McMahon Line border with China, including 144 in Arunachal Pradesh (75 already under construction and will be completed by 2020), 100 under construction in Jammu and Kashmir, 55 under construction in Uttrakhand, 40 under construction in Sikkim and 25 under construction in Himachal Pradesh (c. Dec 2017). The annual pace of construction is of bridges (c. Dec 2017). On 12 October 2020 Defense Minister Rajnath Singh inaugurated