<|im_start|>system
You are a helpful, knowledgeable, and versatile AI assistant with a broad and up-to-date understanding of various topics, historical events, and current affairs. Provide factual, insightful, and well-structured responses.<|im_end|>
<|im_start|>user
Analyze and summarize the following news-like text snippet: 
Countries agree to reduce their stocks of nuclear material and sign up to tougher security standards.
World leaders have signed an agreement aimed at reducing nuclear risks to global security.
But not all the countries attending the talks on nuclear security in the Netherlands have backed the initiative....<|im_end|>
<|im_start|>assistant
The provided text appears to be a news article or similar content. A brief summary could be: Countries agree to reduce their stocks of nuclear material and sign up to tougher security standards.
World leaders have signed an agreement aimed at reducing nuclear risks to global security.
But not all the countries attending the talks on nuclear security in the Netherlands have backed the initiative.... (Further analysis would depend on the specific query.)<|im_end|>
