There are two Chinese guys in my team. They are adamant about not speaking English. We are meant to be working on the same project, but I have no clue what's going on. Say I want to upload some code, but it turns out they already have been working on it. My British line manager is overloaded with work so he has no time to pay any attention. I tried speaking to him and also the founder of the company and they asked the Chinese to speak English at work. But they just ignore it and at the end of the day they are very productive working together -- so the founder doesn't really care. Now I end up working alone and without a clear direction. I hate the situation. In general I feel that the founder of the company has no clear vision and is not good at building the company. I want to leave (or maybe I will be kicked out, because I end up being less productive than the Chinese duo). How do I explain to prospective employers why I want to leave. I have been to several interviews lately and they all ask the reason for wanting to leave.