Another significant initiative spearheaded by Teymourtash was the concerted effort to eliminate the complex web of capitulation agreements Iran had granted various foreign countries during the Qajar dynasty. Such agreements conferred extraterritorial rights to the foreign residents of subject countries, and its origins in Iran could be traced back to the Russo-Iranian Treaty of Turkmenchay of 1828. Despite considerable opposition from the various foreign governments that had secured such privileges, Teymourtash personally conducted these negotiations on behalf of Iran, and succeeded in abrogating all such agreements by 1928. Teymourtash's success in these endeavours owed much to his ability to methodically secure agreements from the less obstinate countries first so as to gain greater leverage against the holdouts, and to even intimate that Iran was prepared to break diplomatic relations with recalcitrant states if need be.