Why did Sree Rama kill  Vali  from the

 clandestine of the tree  (hidden by)?

Sree Rama was the Sampurna Avatara of

Lord Sree Maha Vishnu and was

the seventh incarnation of the Lord Sree Vishnu in  the Tretayuga.

Sree Rama was the Dharma murthy.

He Himself Vigrahvan Dharmah. Raghuvamsa Tilakah (means

He was the best in all respects).

He was the  poorvabhashi,  mitabhashi and hitabhashi

(If any person comes in front of Sree Rama,

 He speaks first, He speaks very limitl and

speaks the welfare of others) ( Sree Rama was

Smita Bhashi, Purva Bhashi and Hita Bhashi ).

 He was born in the dynasty of  Surya  and

He was a Kshatriya and also a great valour  and has a heroic bravery.

The Kings have the profession of hunting and also

 it is a Raja Dharma.

Mostly the Kings kill the wild  animals from the hidden place.

More over in the Ramayana, the Vali a Vanara King and

 brother of Sugreeva who were both great valours.

 But the Vali has got great boon , when he fights

 with any opponents,  he gets the half of their valour.

Having bravery the Vali gets the half of others’ strength.

There he normally kills others easily in the fighting or war.

Here Vali is also a animal. Having knowledge and Dharma,

 Vali illegally made Sugreeva’s wife  his own by force.

And more over Vali with his kingship power always

used to quarrel with Sugreeva and always beat him

 and Sugreeva used to run away from Vali to save his life.

So Vali has got all the actions of a power beast.

Hence Sree Rama killed the Vali who behaved like  a wild beast

 from a hidden place which was behind  a tree.