If your best offensive weapon is also your best defensive weapon, its the only weapon you'd need.

 I suspect in orbit of our star system is at least one foreign alien device.   Traveling spacetime is tricky.   The light they have is old.  If you wanted to instantly travel here you'd want to know if its worth the visit.  So live 2 way data is being passed through this star system.  Why?  Because we are here.  We are not alone.  Never have been and they already know all they need to about us.

 Why should we change? Most don't realize a change is required. Well not really required but less cruel otherwise. The change is how Humanity views one another. At the moment we beings see each other as rival Clans forged via our ancestors. In essence we are at War each and every single human being on the face of the planet. We do not see each other as family. But family it exactly Is All We Are. Should  family need to be cruel to one another in perpetual judgements of worth competing to the death actualizing a genocide? See world peace is simple.  It only requires peaceful people.  When the natural born children of earth care for one another in love and demonstrations of passions world peace would already be.  Change is required so why let the hate taught to us by history override those present to see the imaginary lines which divides us dissapear.

 Time travel is easy.  We already do it.  Jump on a fast plane and navigate the earth quickly.  You will be traveling forwards and backwards in time.

 Planetary cooperation requires individually choosing to care.  Voluntarily laboring for humanity by engaging in your hobby.  Trying your best and demonstrating to the world your skills.  Not extorted.  Not bribed.  Not horded.  Not marketed.  Not competition.  Not judged.  Not indebted.   For pleasure.  And for this pleasure you too are comfted by the pleasures of others.  This is what cooperation is.  Caring.  We are all family.  Every mother father daughter and son are natural born citizens of earth deserving the best care our family is capable.

 You are all animals. Mindless not a thought in your heads.  We are at war.  Me and you.  To the death.  No peace has ever been brokered between my ancestors and yours.  Evolution of generations breeds much history though it is you and I whom stand here now.  Communicating.  World wide.  This generation of humanity has tools humans have not had in a long time.  And if we are ever to band together to escape the earth peace must start somewhere.  You and I are natural born citizens of earth, its children of mothers fathers daughters and sons.  If we are ever to have a world peace it will require peaceful people.  But you you are a mindless animal and probably can't understand what I'm saying.

 What i know now.  I have witnessed a wonderful event. A frame from the universe one of infinite opportunities both astromical and microscopic, expanded to unimaginable scales here now we are. By  earth giving grace i have breath and with me are billions and with us infinite more other species.  Our evolution our journey bares witness to stars and space dwarfing our reality as we are blind by star light.  We think "day" is normal and it is not.  The universe is not a measurement of hours or years.  It is impossibly fast.  And in this cold vacuum is us and we are not alone.  Prey and preditor. There could be something more.  Are we that? No not yet.  Those people go on to share in a galactic community.  This can not be done through strength and deception, manipulate control to profit through extortion of prostituted abilities   A planet's peace can only exist when peaceful people exist.  To see we are all mothers fathers daughters sons family loving and achieving together so the best survival can be experienced by those we love.  When the natural born children and citizens of earth voluntarily choose to care for one another without competition trade inequality nor recognition .  We work our passions because it is what  we love to do and do do freely.  We must care for our species no matter where on our planet they are our family.  No true borders exist and our possible current thoughts can breed a possibility.  And one day we may will. Death is a certainty how better that be here now to evolve a species.