TOKYO (AFX-ASIA) - Finance Ministry senior deputy director-general Zenbei Mizoguchi said the ministry is ready to take appropriate action in the market against any signs of excessive strength in the yen against the dollar. "We have not changed our policy stance towards the pair. If there are signs of a sharp rise in the yen against the dollar, we will take appropriate action," he told AFX-ASIA at the ministry. "We are closely watching the market movements," he added.