for an effective offensive action that could possibly force Thebes or Sparta to stop the war. Kagan criticizes the Periclean strategy on four counts: first that by rejecting minor concessions it brought about war; second, that it was unforeseen by the enemy and hence lacked credibility; third, that it was too feeble to exploit any opportunities; and fourth, that it depended on Pericles for its execution and thus was bound to be abandoned after his death. Kagan estimates Pericles' expenditure on his military strategy in the Peloponnesian War to be about 2,000 talents annually, and based on this figure concludes that he would have only enough money to keep the war going for three years. He asserts that since Pericles must have known about these limitations he probably planned for a much shorter war. Others, such as Donald W. Knight, conclude that the strategy was too defensive and would not succeed. In contrast, Platias and Koliopoulos reject these criticisms and state that "the Athenians lost the war only when they dramatically reversed the Periclean grand strategy that explicitly disdained further conquests". Hanson stresses that the Periclean strategy was not innovative, but could lead to a stagnancy in favor of Athens. It is a popular conclusion that those succeeding him lacked his abilities and character. Oratorical skill Modern commentators of Thucydides, with other modern historians and writers, take varying stances on the issue of how much of the speeches of Pericles, as given by this historian, do actually represent Pericles' own words and how much of them is free literary creation or paraphrase by Thucydides. Since Pericles never wrote down or distributed his orations, no historians are able to answer this with certainty; Thucydides recreated three of them from memory and, thereby, it cannot be ascertained that he did not add his own notions and thoughts. Although Pericles was a main source of his inspiration, some historians have noted that the passionate and idealistic literary style of the speeches Thucydides attributes to Pericles is completely at odds with Thucydides' own cold and analytical writing style. This might, however, be the result of the incorporation of the genre of rhetoric into the genre of historiography. That is to say, Thucydides could simply have used two different writing styles for two different purposes. Ioannis Kakridis and Arnold Gomme were two scholars who debated the originality of Pericles' oratory and last speech. Kakridis believes