29681
Tensions with Yemen over fishing rights in the Red Sea flared up in 1995 and again in 2002 , and Eritrea 's difficult relations with other nations could hamper further development of the industry .
 Yemen, Red Sea, Eritrea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yemen, Red Sea, Eritrea