Based on theoretical speculations it is important to construct both hadronic and leptonic machines which allow us to study genuine TeV physics (100 TeV for hadronic and 10 TeV for leptonic). LHC and sub-TeV LC are considered to be precursors to these machines. Non-accelerator experiments and lower energy high-intensity machines will also be important. It certainly requires worldwide collaborations to build all these machines. How should we proceed?