I mean, because the embed code is not a URL?
<iframe src='http://embed.verite.co/timeline/?source=0ApnNAEv3xtDldGxkV0h1VUk3SU52Q0JOU2NmVUhheVE&font=Bevan-PotanoSans&maptype=toner&lang=en&height=650' width='100%' height='650' frameborder='0'></iframe>
If i just paste the embed code it looks like this.