I don't think that's their only focus: https://www.marinecorpstimes.com/news/your-marine-corps/2021/04/15/warrior-mindset-must-remain-corps-says-even-as-marines

I don't think that's their only focus: https://www.marinecorpstimes.com/news/your-marine-corps/2021/04/15/warrior-mindset-must-remain-corps-says-even-as-marines-shift-from-infantry-to-the-sea/ https://www.marinecorpstimes.com/news/your-marine-corps/2021... Edit: littoral appears in their documents extensively. But you are correct that China is the focus, for sure.