The foreign relations of Iran from 1800 to 1921 have on the whole been discussed in terms of diplomatic relations between states, of ‘Great Power’ policy, and of the impact of the world economy upon a comparatively weak and traditional society. A brief survey of the existing literature reveals that Iran's lack of progress has been attributed among other factors to her form of government, foreign interference and to her predicament as a buffer state between the British and Russian empires. The traditional power structures of Iran, as dominated by an absolute monarchy intent on personal interest with a concomitant lack of realism when engaging in war, was, in Ramazani's view, the origin of the country's weakness. Kazemzadeh saw the subject from the point of view of Anglo-Russian rivalry at the highest levels, and argued that both powers sought to impose hegemony on Iran by a variety of means, including, putting pressure on the Shah and chief ministers, using commercial concessions and exercising intimidation. The competition of Britain and Russia was so intense that each was determined to undermine any plan of development proposed by the other, opportunities were numerous, as, for example, in the introduction of railways. Yapp, to some extent, questioned this argument by pointing out that British interests were more complex than those of the Russians; on the one hand a stronger Iran was a more efficient buffer-state, but on the other hand it could undermine British influence in Afghanistan and the Persian Gulf. Yapp also noted that the British and Russian presence gave advantages to Iran in terms of the development of international trade, the control of internal disorder and in the imposition of regional security. Greaves saw Britain's diplomatic connections with Iran as dominated by her preoccupation with the defence of India, and believed that its attitudes to Iran were neither consistent nor strong. Issawi, in his study of economic development, also presented a more complex picture which emphasises the variety of the factors involved, and also the fluctuations in the economy over the period. He pointed out that trade did grow steadily, that the country benefited from new technology, for example the telegraph and the construction of the Suez Canal, and that it lived within its means. On the other hand, involvement in the international economy from 1890–1914 led to rapidly increasing foreign financial and political factors, which undermined the county's independence. Wright provided a different approach in that, while acknowledging the baleful effects of aspects of Anglo-Russian rivalry on Iran, he was more concerned with the experiences of a variety of ‘English’ amongst the Iranians, and thus offered a study of interaction between foreigners and Iranians at a level below that of international politics.