What is the strongest VPN security protocol?

When it comes to ensuring the security and privacy of your online activities, choosing the right VPN security protocol is crucial. So, I have to ask - what is the strongest VPN security protocol available today? Is it OpenVPN, which offers a good balance of speed and security? Or is it IKEv2, known for its quick re-connection times and strong encryption? Perhaps it's L2TP/IPsec, which combines two protocols for added security? Or could it be SoftEther, a lesser-known but potentially more secure protocol? Ultimately, the answer may depend on your specific needs and preferences, but I'm eager to learn more about the strengths and limitations of each option.