It's ???? what is the meaning??

{It's when the North Korean leader sets out his aims for the coming year, and this year it reaped almost instant results with the start of the first face-to-face talks with Seoul in almost two years.}

The above sentence I found on CNN NEWS.
But I cant understand the "It's" mean at the beginning of this sentence.
If the sentence without "It's" and become "When the North Korean leader sets out his aims for the coming year, and this year it reaped almost instant results with the start of the first face-to-face talks with Seoul in almost two years.", I would understand easily.
Anyone can tell me the meaning of the "It's" at the beginning of this sentence??
the original news is here http://edition.cnn.com/2018/01/19/asia/kim-jong-un-speech-intl/index.html