https://www.yahoo.com/news/kim-says-us-know-north-korean-nuclear-force-010952959.html


> He also called for improved relations with the South, an idea mentioned in speeches more often than it is met.

の後ろの部分がわかりません。

疑問点
(1) speeches って? この演説のことをさしているなら単数形のはずで the speech とか this speech になると思うから、違うもの?
(2) more often than it is met って? it its met がわからない

an idea mentioned in speeches more often than it is met. の意味と、上記の疑問点について教えてください。