seize on

ブッシュ大統領が機密情報の漏洩を許可した疑いがあるという記事から。


Democrats seized on the news, accusing Bush of hypocricy.


seize on/upon = to suddenly show a lot of interest in sth, expecially because you can use it to your advantage.

（機会）をとらえる
（考え・提案に）に飛びつく

例文
○ The rumours were eagerly seized upon by the local press.
○ White House staffers seized upon the senator's comments.
○ He will seize upon any offer.
（彼はどんな申し出にも飛びつくだろう。）