In modern times, warfare has evolved with technological advancements, and the weapons of today are vastly different from those used in the past. Here are the top five modern weapons that are redefining warfare:

1. Unmanned Aerial Vehicles (UAVs): UAVs, commonly known as drones, have transformed the military landscape. These unmanned aircraft can fly for hours and gather intelligence in real-time, making them an essential tool for surveillance, reconnaissance, and even targeted strikes.

2. Cyber weapons: The world is increasingly dependent on technology, and with it comes the threat of cyberattacks. Cyber weapons are software designed to disrupt, damage, or destroy computer systems. These weapons can be used to gain access to sensitive information, disable enemy communication systems, or cause chaos by shutting down critical infrastructure.

3. Directed Energy Weapons (DEWs): DEWs use energy to cause damage or destruction. These weapons include lasers, microwaves, and particle beams, and they can be used to destroy targets such as drones, missiles, and even vehicles. DEWs are being developed to provide a non-lethal option for crowd control, but they also have the potential to cause significant damage if used inappropriately.

4. Hypersonic Missiles: Hypersonic missiles are capable of travelling at speeds of Mach 5 or higher, making them extremely difficult to intercept. These missiles have the potential to revolutionize warfare, as they can deliver conventional or nuclear payloads with precision and speed.

5. Railguns: Railguns use electromagnetic energy to launch projectiles at high speeds, making them an extremely powerful and accurate weapon. These weapons can fire rounds at velocities of up to 5,800 meters per second, making them capable of penetrating even the most advanced armor.

In conclusion, the top five modern weapons that are redefining warfare include unmanned aerial vehicles (UAVs), cyber weapons, directed energy weapons (DEWs), hypersonic missiles, and railguns. These weapons have changed the face of warfare and will continue to play a significant role in future conflicts. However, their development also raises ethical questions, and their use must be carefully considered to prevent unintended consequences.