Three years later, a treaty was signed at Punankha whereby the British agreed not to interfere in Bhutanese internal affairs and Bhutan allowed Britain to direct its foreign affairs.
Treaty of Versailles | Punakha | Treaty of Trianon | Treaty of Utrecht | Punakha Province | Treaty of Aix-la-Chapelle | Treaty of Berlin (1878) | Treaty of Rome | Treaty of Lisbon | Treaty of Campo Formio | Treaty of Berlin | Treaty of Aix-la-Chapelle (1748) | Maastricht Treaty | Treaty of the Pyrenees | Treaty of Saint-Germain-en-Laye (1919) | Treaty of Guadalupe Hidalgo | Penn Treaty Park | Lateran Treaty | Washington Naval Treaty | Treaty of San Stefano | Treaty of Roskilde | Treaty of Nice | Treaty of Frankfurt | Treaty of Brest-Litovsk | Treaty of Bassein | Treaty of Basel | Patent Cooperation Treaty | Treaty of Waitangi | Treaty of Schönbrunn | Treaty of Ryswick |
The Treaty of Sinchula stood until 1910, when Bhutan and British India signed the Treaty of Punakha, effective until 1947.
Foreign and defence policy was to be decided by the British according to the 1910 Treaty of Punakha.
In 1910, Sikkim Political Officer and Tibetologist Sir Charles Alfred Bell engaged Bhutan and signed the Treaty of Punakha and other agreements that had the effect of assigning land in Motithang (Thimphu) and a hill station between Chukha and Thimphu to the British, assigning a portion of Kalimpong to Bhutan, and doubling the per annum subsidy from Britain to Bhutan.