Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Sudanese hopes that the lifting of US sanctions will improve their economy have failed to materialise, writes the BBC's James Copnall from the capital Khartoum.

Why the end of US sanctions hasn't helped Sudan