He said that because it was obvious that the USA would impose an embargo on the island and force most of the world to follow it, it was Castro's fault. He said that if Castro had his people's best interest in heart, he would have caved against american pressure.
You type after a colon the name of the sticker and some suggestions should pop up like this (replaced colons with dashes) -che-smile-. Someone made a website with a list of all the available stickers:https://cadence.moe/misc/chapo-chat-emojis